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12 • 65-2396RKSS CO

2

 Transmitter

Start Up

This section describes procedures to start up the CO

2

 transmitter and place the transmitter into normal 

operation.

Introducing Incoming Power

1. Complete the installation procedures described earlier in this manual.

2. Verify that the power wiring to the controller is correct and secure. Refer to the controller 

operator’s manual.

3. Turn on power to the controller.
4. Turn on the controller.
5. Verify that the controller is on and operating properly. Refer to the controller operator’s manual.

NOTE:

When first powered up, the transmitter will enter about a one minute period when the 4-20 
mA output is stabilizing and may be above the controller alarm points or well below zero 
momentarily. RKI controllers have a one minute warmup period when the controller does not 
display any gas reading or give any alarm indication. The CO

2

 transmitter’s 4-20 mA signal 

should be stable by the time the controller’s warmup period is over. 

CAUTION:

Allow the detector to warm up for 5 minutes before you continue with the next section, 
“Setting the Zero Signal
”.

Setting the Zero Signal

Since there is a background of CO

2

 in air of typically 300 - 600 ppm (0.03 - 0.06% volume), it is 

necessary to use a calibration kit with a 100% nitrogen cylinder to set the zero signal of a CO

2

 

transmitter with a low range detector. Fresh air can be used to zero the transmitter if a 0-20% volume, 
0-50% volume, or 0-100% volume detector is being used.

WARNING: Do not remove the junction box cover while the circuits are energized unless the area 

is determined to be non-hazardous. Keep the junction box cover tightly closed during 
operation.

The procedure below describes applying 100% nitrogen using a calibration kit that includes a 
calibration cup, calibration gas, sample tubing, and a fixed flow regulator with an on/off knob. RKI 
Instruments, Inc. recommends using a 0.5 LPM (liters per minute) fixed flow regulator.

1. Unscrew and remove the junction box cover from the junction box.

2. Set a voltmeter to measure in the millivolt (mV) range.
3. Plug the voltmeter leads into the test points on the amplifier. Plug the positive lead into the red (+) 

test point; plug the negative lead into the black (

-

) test point.

4. Screw the calibration cup onto the bottom of the IR CO

2

 detector.

5. Screw the regulator into the 100% nitrogen calibration cylinder.
6. Use the calibration kit sample tubing to connect the regulator to the calibration cup.

Содержание 65-2396RKSS Series

Страница 1: ...RKI Instruments Inc www rkiinstruments com 65 2396RKSS CO2 Transmitter Operator s Manual Part Number 71 0338 Revision 0 Released 9 1 20...

Страница 2: ...calibration and maintenance of the transmitter is essential for proper operation and correct readings Please calibrate and maintain this transmitter regularly Frequency of calibration depends upon the...

Страница 3: ...ent costs local repair costs transportation costs or contingent expenses incurred without our prior approval THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND REPRESENTATIONS EXPR...

Страница 4: ...iring the CO2 Transmitter 9 Startup 12 Introducing Incoming Power 12 Setting the Zero Signal 12 Maintenance 13 Preventive Maintenance 13 Troubleshooting 14 Replacing Components of the CO2 Transmitter...

Страница 5: ...in this manual to assure proper and safe operation of the 65 2396RKSS and to minimize the risk of personal injury Be sure to maintain and periodically calibrate the 65 2396RKSS as described in this m...

Страница 6: ...a 1 1 4 hex that allows removal or installation of the detector with a wrench A porous flame arrestor that is coated with a hydrophobic film that repels liquids is on one end of the detector and allow...

Страница 7: ...minal strip Use the detector terminal strip to connect the CO2 detector to the amplifier NOTE The IR CO2 detector is factory wired to the detector terminal strip See Wiring the CO2 Transmitter to a Co...

Страница 8: ...connect wiring from the amplifier to the controller An O ring seals the interface between the junction box cover and the junction box base The detector and amplifier are factory installed in the junct...

Страница 9: ...ing down see Figure 2 Wiring the CO2 Transmitter to a Controller WARNING Always verify that the power to the controller is off before you make wiring connections 1 Turn off the controller 2 Turn off o...

Страница 10: ...re 3 Connect the positive wire to the PWR SIG terminal Connect the signal wire to the PWR SIG S terminal Connect the negative wire to the PWR SIG terminal CAUTION If shielded cable is used leave the c...

Страница 11: ...an available chassis earth ground at the controller RKI controllers typically have a ground stud that can be used to ground the cable s drain wire 24 VDC DC Ground 4 20 mA In S Amplifier Controller C...

Страница 12: ...ince there is a background of CO2 in air of typically 300 600 ppm 0 03 0 06 volume it is necessary to use a calibration kit with a 100 nitrogen cylinder to set the zero signal of a CO2 transmitter wit...

Страница 13: ...junction box Maintenance This section describes maintenance procedures It includes preventive maintenance troubleshooting and component replacement procedures Preventive Maintenance This section descr...

Страница 14: ...ring is correct and secure 2 Calibrate the transmitter 3 If the fail condition continues replace the detector 4 If the fail condition continues contact RKI for further instruction Slow or No Response...

Страница 15: ...about a one minute period when the 4 20 mA output is stabilizing and may be above the controller alarm points or well below zero momentarily RKI controllers have a one minute warmup period when the c...

Страница 16: ...of the zero pot Be sure to make arrangements so that this does not cause unwanted alarms 10 Turn on power to the controller 11 Turn on the controller and place it into normal operation NOTE When first...

Страница 17: ...n set the zero reading set the response reading and return to normal operation WARNING The controller is not an active gas monitoring device during the calibration procedure NOTE The following procedu...

Страница 18: ...ator into the calibration cylinder Verify that the calibration gas is representative of the transmitter s target gas 2 Turn the regulator s on off knob counterclockwise to open the regulator 3 Allow t...

Страница 19: ...tor 0 100 Volume 65 2396RKSS 01 Infrared CO2 transmitter 0 9 000 ppm includes detector junction box and amplifier 65 2396RKSS 02 Infrared CO2 transmitter 0 5 000 ppm includes detector junction box and...

Страница 20: ...with gauge and knob 0 5 liter minute continuous flow for 17 liter and 34 liter steel calibration cylinders cylinders with external threads 81 1051RK Regulator with gauge and knob 0 5 liter minute con...

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